JPH0143924B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The invention provides a structural set for the construction of a micro-optical bank with a rod and a receiving element for holding an optical structural element, the receiving element having a passage for passing the rod through it. This relates to something that has a hole and can be tightened and fixed to a rod.

This type of structure set is published in West German Publication No. 2636657.
It is known from This structural set has, in addition to other unit parts, a rod and a receiving element, the receiving element generally consisting of a rectangular plate with four through holes in the corners, through which the rod can be inserted. As a result, structures for e.g. light paths can be realized. The receiving element has a relatively large opening in the center, in which optical arrangements, such as lenses, filters, mirrors, etc., can be stored. A clamping pin is provided as a separate structural part for fixing the receiving element on the rod. The receiving element has a recess arranged tangentially to the through hole for use with the clamping pin, the through hole and the recess being overlapped by the necessary dimensions for tightening. Such a clamping mechanism has advantageous manufacturability, but requires a separate structural part for the clamping pin.

Other structural sets are also known. There, the receiving element has a hole with a screw, which hole is arranged perpendicular to the rod axis and into which a fixing screw is inserted. Fixing screws are also provided for the accommodation of optical components in the opening, so that such a receiving element must have a large number of holes with threads. In this case, the receiving plate as well as the rod are made of metal, preferably aluminum. The machining of the receiving element, especially the provision of through holes and thread cutting, is very sensitive to machining accuracy.

Other structural sets are also known. There, the receiving element has a hole with a thread, the hole being arranged perpendicular to the rod axis, and a fixing screw being arranged in the hole.

Fixing screws are also provided for the accommodation of the optical components in the openings, so that a receiving element of this type must have a large number of holes with threads.
Similar to rods, the accommodation plate has many attempts at precision machining of this type of component in the field of optical technology.
Screws and fixing screws are always used for tightening. This accuracy presupposes that such machining is performed correctly.

The invention is such that a set of structures of the type mentioned at the outset can be assembled and disassembled for the structure or micro-optical bank without the use of tools and without the use of additional elements such as separate clamping elements etc. The basis of the task is to do so. Handling should be possible in a simple manner. In this case, it is also possible to attach other storage elements to or remove them from the spatially fixed structure without having to adopt a complete construction. Furthermore, since structural sets are and should be of low cost, other areas of use arise, for which the use of hitherto known structural sets cannot be replaced economically.

According to the invention, this means that the receiving element has a form-locking and frictional snap connection in the area of the through hole, which prevents the receiving element from unintentionally moving the rod without additional fastening elements. It can be fixed by tightening. Only a snap connection is formed between the receiving element and the rod, so that the receiving element and the rod can be assembled without tools and additional elements. The form of the receiving element, especially in the area of the opening, is chosen in such a way that it allows for easy and quick assembly, but on the other hand, the receiving element is fastened to the rod sufficiently tight to prevent unintentional movement. ing. Structure sets are used wherever maximum precision is not required. The structural set can be combined with existing structural parts of known structures. The structural set is highly suitable for the construction of optical instruments such as magnifying glasses, telescopes, simple microscopes, projectors, projector-receiver illuminators, etc. The limitations of use are primarily determined by the dimensional stability of the materials for the rod and containment elements. Rod is a round bar material drawn with particular precision, such as steel, brass,
In the case of tubes or sidings made of light metal or the like, the receiving element is preferably made of synthetic resin by injection molding.

The receiving element can include a closed-edged and open-edged passage. Closed-edged holes require the rod to be inserted laterally. In the open-edged opening, it is possible to snap the receiving element laterally onto the rod or to fit it onto this rod by a pivoting movement.

The through hole has protruding ribs or other indentations distributed around its periphery forming a snap connection. These indentations are distributed as evenly as possible over the circumference and recesses are formed outwardly between the indentations. The indentations form a circle, the circle preferably having a slightly smaller diameter than the diameter corresponding to the diameter of the rod material, while the recesses are arranged on a relatively larger diameter. This also applies to closed-edged as well as open-edged holes. The open-edged opening has indentations distributed over a circumferential area of greater than 180°. For example, it is also possible to provide the receiving element with two, three or four through holes.

In all embodiments, the receiving element is provided with the elastic modulus necessary for the function of the snap connection in the area of the opening. The plastic material of the receiving element can be produced in a special way.

The receiving element for retrofitting has exclusively open-edged openings, so that the receiving element itself has four edges by means of two or more preferably arranged receiving elements on the end faces. If fixed by a closed hole, it can be attached to or separated from a structure.

The open-edged opening can be provided with lateral parts in order that such a receiving element can be mounted with a snap action by a pivoting or tilting movement. The snap connection of the receiving element is preferably formed from a rod of drawn bar stock. In this case, the dimensions and indentations of the through holes are designed to be wide enough to accommodate the tolerances of the drawn round bar.

Preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a fractured and simple embodiment of a micro-optical bank as can be achieved by means of a structural set. Fitted onto the four rods 1 are two receiving elements 2, which are shown in more detail in FIG. In the center there is a receiving element 3 as shown in plan view in FIG. The receiving element 3 can be fitted or mounted by previously connecting the two receiving elements to the rod 1, so that a spatial fixation of the rod 1 is achieved. The receiving element 2 or 3 has a through hole 5 with an open edge and a through hole 4 with a closed edge. With the closed-edged opening 4 the rod 1 has to be inserted into the end face, while with the open-edged passage 5 the given receiving element 3 can be placed onto the rod 1 from the side. It is possible to fit or push. A simple optical element 6 is inserted into the receiving element 2 or 3 by means of an arrow 7 or 8 into an opening 9 provided in the center of the grid-like arrangement of the rods 1.

According to FIG. 2, the receiving element 2 is designed as an injection-molded plastic part and has the form of a plate, which is arranged concentrically in the center of the opening 9 and has closed edges in the area of the four corners. It has a through hole 4. The periphery of this through hole 4 is provided with knots, ribs, etc. 10,
The ribs etc. are distributed as evenly as possible over the circumference and there are recesses 11 between the ribs.
This configuration corresponds to the shape of the rod of round bar material and forms the through holes 4 (similar to the through holes 5 of the receiving element according to FIGS. 3 to 6) snap connections 10, 11. The outer periphery of the receiving element 2 is provided with a notch 12, on the one hand to obtain the necessary elasticity in the area of the snap connections 10, 11, and on the other hand to achieve a compact construction by means of the lateral connections of the optical path. This is to prevent interference.

FIG. 3 shows a receiving element 3 with an open-edged opening 5.
shows. Here too, the through hole 5 is provided with projections, ribs, etc. 10 and recesses 11, the projections, ribs, etc. 10 being distributed over an angular range of more than 180 DEG on the circumference. The receiving element 3 has lateral parts 3 which end at a distance from the dotted grid of the rods 1, ie they can be immediately attached to or removed from the structure.

FIG. 4 shows another receiving element 3' with three lines of open passages 5. It can be seen here that this receiving element 3' can be easily attached to or removed from the structure.

The receiving element 2' shown in FIG. 5, like the receiving element 2, has four through holes, which are here designed as open-rimmed through holes 5. As can be seen in FIG. 6, these openings are provided with lateral recesses 14, so that this receiving element 2' can be swiveled in by a pivoting or tilting movement of the spatially fixed rod 1. It can be rotated or rotated.

FIG. 7 is a somewhat more complex but diagrammatic representation than FIG. 1, showing various types of receiving elements 2,
3 and 3' show the possibility of using a direct connection of rods 1.

[Brief explanation of drawings]

1 is a perspective view of a simple micro-optical bank straightened from a structural set; FIG. 2 is a front view of the receiving element of the first embodiment; and FIG. 3 is a front view of the receiving element of the second embodiment. , FIG. 4 is a front view of another accommodation element, FIG. 5 is a front view of another accommodation element, FIG. 6 is a sectional view taken along the - line of FIG. 5, and FIG. 3 shows a perspective view of the possibility of attaching different accommodation elements; FIG.

Claims (1)

Claims: 1. A structural set for the construction of a micro-optical bank with a rod and a receiving element for holding an optical structural element, the receiving element having a through hole for passing the rod. In the case where the receiving elements 2, 2', 3, 3' have a form-restricting and frictional snap connection in the area of the through holes 4, 5, Structure set for the construction of a micro-optical bank, characterized in that the receiving element can be fixed to the rod 1 without additional fastening means to prevent unintentional movement. 2. A structural set according to claim 1, wherein the receiving elements 2, 2', 3, 3' are provided with a through hole 4 with a closed edge and a through hole 5 with an open edge. 3. A structural set according to claim 1, wherein the through holes 4, 5 have projections, ribs or indentations 10 distributed over the circumference forming a snap connection. 4. According to one of the claims 1 to 3, the open-edged opening 5 has notches 10 distributed over a circumferential area greater than approximately 180°. structure set. 5. Claims 1 to 4, in which the receiving elements 2, 2', 3, 3' are designed with a modulus of elasticity necessary for the function of the snap connection in the area of the through hole. A set of structures described in any one of: 6. Any one of claims 1 to 5, in which the receiving element 2', 3, 3' has only a through hole 5 with an open edge for later installation of the rod. Structure set as described in. 7. A structural set according to claim 6, in which the open-edged through hole is provided with a side portion (14). 8 Snap connection on rod 1 with receiving element 2,
A structural set according to any one of claims 1 to 7, consisting of drawn round bars at 2', 3, 3'.